Daniel o neil



(No Model.)

D. ONEIL. CURB BOX GOVER.

No. 192,227L Patented Feb. 21, 1893.

Invenn i 23M @M l/m1,@

UNITED STATES PATEnrr OFFICE.

DANIEL ONEIL, OF ROCHESTER, NEW YORK, ASSIGNOR OF 'lWVO-FIFTHS TO HOVE tBASSETT, OF SAME PLACE.

CURB-BOX COVER.

SPECIFlCATION forming part of Letters Patent No. 492,227, dated February21, 1893.

Application tiled June 6, 1892. Serial No. l1:35,(335. (No model.)

To @ZZ whom it may concern:

' Be itknown thatl, DANIEL ONEIL, of Rochester, in the county of Monroeand State of NewYork, have invented anew and useful'linprovement inCurb-Box Covers, which improvement is fully set forth in the followingspecification and shown in the accompanying drawings.

The object ot' my invention is to produce a curb box cover that shall beless easily tampered with than those now in use by unauthorized personsand one that can be more readily operated by those whose business it isto use them. Also to furnish in this invention a device which shallcontain apackingring and be water tight and also have a metal-to metalbearing and thus be unyielding to the shock or pressure of the wheels ofvehicles or the tread of horses which may pass over it.

The invention is hereinafter more fully described and particularlypointed out in the claim.

Referring to the drawings Figure 1 is a plan of my improved curb boxcover. Fig. 2 is a similar plan with the plug removed. Fig. 3 is a sideelevation vertically sectioned as on the dotted line 3 3 in Fig. 1. Fig.4 is a side elevation seen as indicated by arrow in Fig. 2 a part beingbroken out and vertically sectionedas on the dotted line 4c l in Fig. 2.Fig. 5 is a side elevation of the plug viewed as indicated by arrow inFig. 3. Fig. 6 is a side elevation of the working end of the operatingwrench; Fig. 7 being an end view of the same. n

Referring to the parts shown, A is an annular crowning bed-piece whichrests upon the side walk or other place in or about the street in theusual manner. When in the street or drive way this bed-piece is set intostone.

B is a pipe threaded in the bed-piece and extending downward to the curbbox and is made longer or shorter according to the depth of the trench.

C is the rod to operate the cock the latter being of ordinaryconstruction and not shown.

D is a circular plug held within the bedpiece to close the centralopening therein. The bed piece is formed with two internal segmentalspiral ribs a c opposite each other and the plug is formed withcorresponding spiral or inclined bosses b which when the plug is put toplace, enter in under the respective spiral ribs. The lower or terminalends of the ribs a a turn abruptly downward,

the spiral ribs and turning it horizontally it 6o will be drawn iirmlydown to a seat or bearing upon the interior of the bed-piece. The plugis formed with an annular recess c to receive a packing ring cl ofleather, rubber or other suitable material. formed with an internalhorizontal circular ledge e upon which to receive the packing ring, asshown.- It is further formed with a circular depressed seatf to receivethe peripheral part, g, of the plug. proportioned that when the plug isbeing turned downward in the bedpicce the packing ring first comesincontact with the lower ledge or seat @,aand by further turning theplug the part g meets the upper seat f; in this case bringing metal tometal. rllhis solid metal bearing between the bed-piece and the plugrenders the latter rigid and unyielding in its place in the bed piece sothat the packing ring will not be injured or too severely 8o pressed bythe Weight of a vehicle should its wheels pass over the plug. This is avery great advantage for while the unyielding bearing between the plugand the bed-piece effectually protects the packing ring the latter 8 5renders the joint between the plug and the bed-piece water tight. Theupper surface of the plug like the upper surface of the bedpiece iscrowning and formed with a circular depression 7?. crossed diametricallyby .a V- 9o shape rib or bridge i. This depression and rib are for thepurpose 0f receiving a wrenchsuch as shown in Figs. 6 and '-for thepurpose of turning the plug into and out of the bed-piece. This samewrenchris also used upon the rod C to operate the Valve or cock, theupper end of the rod being formed V- shape similar in cross section tothe bridge 1.'. The sharp upward nclines a a at the terminals ofv thespiral ribs a a serve to lift the loo plug out of the bed-piece when itis turned in an opposite way to that which carries it down The bed-pieceis 65 The parts are so 7o onto its seat, as above set forth. The top ofthe spiral is substantially straight or horizontal so' that when theplug reaches the top of the incline n it will be above the top of thebed-plate so that it can be removed from it Without having to rotate itnearly one whole revolution to reach the top ofy the spiral. When theplug is thus raised from its seat it may be readily taken hold of by thehand and wholly removed from the bed piece. The plug is purposely formedso that it cannot be taken out of the bed-piece by hand until it isfirst raised by means of the wrench used in turning it as just abovestated.

What I claim as my invention is- A curb box cover consisting of anannular, internally shouldered bed piece adapted to be secured to thevtop of the pipe, said bed piece being provided with two internal, spiralsegmental ri bs, diametricallyopposite eaoh other,

each having its lowerend abruptly inclined downward, and having itsupper surface substantially horizontal, and its lower surface inclineddownward, and a cylindrical plug adapted to tit within the bed piece,and having shoulders to engage with the shoulders of the bed piece, andalso with two projecting bosses diametrically opposite each other toengage with the spiral ribs of the bed piece, the upper face of each ofsaid bosses being flat to engage with its respective rib, to secure tothe plug in the bed piece, and the lower face being beveled or inclinedto engage with the inclined end of the rib and raise the plug f out ofthe bed piece, substantially as set forth.

In witness whereof I have hereunto set my hand, this 2d day of June,1892, in the pres-

